LEM Avalon AV12-4, Avalon AV15-4, Avalon AV12-8, Avalon AV15-8, Avalon AV15S Service Manual

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Soldering point.
Male connector.
Female connector.

M/F faston connector.

Test point.

Supply voltage.

Logic supply ground.
Analog supply ground.
Chassis ground.
Earth ground.

Flag joined with one or more flags

GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. [phone] - fax [phone]
GENERALMUSIC on the NET: http://www.generalmusic.com

SERVICE MANUAL

L

CODE: 270241

M

Warnings

with the same signal name inscribed.

Address

ATTENTION

Observe precautions when handling electrostatic sensitive devices.

Notice

Service must be carried out by qualified personnel only.Any tampering carried out by unqualified personnel during the guarantee period
will forfeit the right to guarantee.
For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.
To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
All components marked by this symbol have special safety characteristics, when replacing any of these components use only
manufacturer's specified parts.
The (µ) micro symbol of capacitance value is substituted by U.
The (

Ω

) omega symbol of resistance value is substituted by E.
The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified.
All resistors are 1/8

Ω

unless otherwise specified.

All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.

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Index

Technical Specifications

2

AV12-4, AV12-8, AV15-4, AV15-8, AV15S Passive Versions Schematic Diagrams

2

AV12-4, AV12-8, AV15-4, AV15-8, AV15S Passive Versions Spare Part List

3
4

AV12A Test Procedures & Adjustment

AV12A, AV15A, AV15SA Block Diagrams

3

AV15A Test Procedures & Adjustment

5

AV15SA Test Procedures & Adjustment

5

AV12A Schematic Diagram

8
9

AV15SA Schematic Diagram

AV15A Schematic Diagram

7

10

AV12A, AV15A, AV15SA Active Version Spare Part List

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22

22

2

AV-12

AV-15

AV-15S

COMPONENTS

High

Low

1" tweeter with phasing

plug and EWT horn

12" woofer

1" compression driver

with EWT horn

15" woofer

15" woofer

POWER HANDLING

(EIA RS-426A)

W continuous

W peak

200

400

350

600

350

600

IMPEDANCE

Ohms

4 / 8

4 / 84PASSIVE CROSSOVER

Hz

5 kHz

8 Ω: 6 / 12 dB/oct.

4 Ω: 0 / 12 dB/oct.

2,6 kHz

8 Ω: 6 / 12 dB/oct.

4 Ω: 12 / 18 dB/oct.

200 Hz

12 / 6 dB/oct.

CONNECTIONS (passive versions)

4-way SPEAKON + JACK (input + link)

CONSTRUCTION

High density polyetylene enclosure + polyetylenic foam

Protection metal grid

DIMENSIONS

mm (WxHxD)

436x616x420

500x706x490

500x706x490

WEIGHT (passive / active)

kg

15 / 18,5

20 / 26

18,5 / 24,5

EIA OUTPUT POWER

(1kHz, max THD 1%)

W

180

300

300

POTENZA D’USCITA IHF

(Tone burst 10% 20 ms

Max THD 0,1%)

W

200

350

350

INPUT SENSITIVITY

dB (V)

0 (0.775V)

INPUT IMPEDANCE

kohms

30 (balanced) - 15 (unbalanced)

ACTIVE CROSSOVER

Hz

From 80 to 320 @ 12db/oct.

DISTORSION

%

<0.02 (THD+Noise)

CONTROLS

Volume - Shield on/off - XOVER frequency (AV-15SA)

DISPLAY

SIGNAL/LIMIT LED - ON LED

CONNECTIONS

COMBO + XLR-M (input + link)

COMBO + XLR-M (input)

XLR-M (output)

POWER SUPPLY

See label on the apparatus

SENSITIVITY (SPL 1W/1m)

dB9799

97

MAX SPL continuous

dB

120

124

122

MAX SPL peak

dB

123

127

125

FREQUENCY RESPONSE

Hz (-10dB)

70-20000

60-20000

50-200

DISPERSION (OxV)

60x40

60x40

NOTE:

* Measured with the anti-clipping circuit off.

SYSTEM SPECIFICATIONS

AMPLIFIER SPECIFICATIONS (active versions)

AVALON TECHNICAL SPECIFICATIONS

LOUDSPEAKER SPECIFICATIONS

Transistor PackagesTransistor Packages

Transistor PackagesTransistor Packages

Transistor Packages

TO92TO92

TO92TO92

TO92

TO126TO126

TO126TO126

TO126

TO220TO220

TO220TO220

TO220

TO218TO218

TO218TO218

TO218

TO264TO264

TO264TO264

TO264

BC550, BC560:BC550, BC560:

BC550, BC560:BC550, BC560:

BC550, BC560:

MJE340, MJE350,MJE340, MJE350,

MJE340, MJE350,MJE340, MJE350,

MJE340, MJE350,

MJE15030,MJE15031:MJE15030,MJE15031:

MJE15030,MJE15031:MJE15030,MJE15031:

MJE15030,MJE15031:

TIP35C,TIP36C,TIP35C,TIP36C,

TIP35C,TIP36C,TIP35C,TIP36C,

TIP35C,TIP36C,

MJL21193,MJL21193,

MJL21193,MJL21193,

MJL21193,

1=Collector

MJE802:MJE802:

MJE802:MJE802:

MJE802: 1=Base

MJE4342, MJE4352:MJE4342, MJE4352:

MJE4342, MJE4352:MJE4342, MJE4352:

MJE4342, MJE4352:

MJL21194:MJL21194:

MJL21194:MJL21194:

MJL21194:
2=Base 1=Emitter 2=Collector 1=Base 1=Base
3=Emitter 2=Collector 3=Emitter 2=Collector 2=Collector
2N5401, 2N55502N5401, 2N5550

2N5401, 2N55502N5401, 2N5550

2N5401, 2N5550 3=Base 4=Collector 3=Emitter 3=Emitter
1=Emitter 4=Collector 4=Collector 4=Collector
2=Base
3=Collector

3 3

3 3

3

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Spare Part List (PASSIVE VERSIONS)Spare Part List (PASSIVE VERSIONS)

Spare Part List (PASSIVE VERSIONS)Spare Part List (PASSIVE VERSIONS)

Spare Part List (PASSIVE VERSIONS)

Code Description

AccessoriesAccessories

AccessoriesAccessories

Accessories

277334 Owner’s Manual

AV-12 4 OhmAV-12 4 Ohm

AV-12 4 OhmAV-12 4 Ohm

AV-12 4 Ohm

778112 Cables Assembly
727601 Inputs Panel Assembly AV-12/4 Ohm
778144 * Jack-Speakon Cables Assembly
141200 ** Speakon Socket (NL4MP Neutrik)
140193 ** Jack Mono Socket
768202768202

768202768202

768202

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**

*

Crossover Filter Board (Pcb#313063) AV-12/4 OhmCrossover Filter Board (Pcb#313063) AV-12/4 Ohm

Crossover Filter Board (Pcb#313063) AV-12/4 OhmCrossover Filter Board (Pcb#313063) AV-12/4 Ohm

Crossover Filter Board (Pcb#313063) AV-12/4 Ohm
667692 * Rear Panel AV-12/4 Ohm
667702 Handle
667700 Grid
657270 EWT(TM) Elliptical Horn
657267 Box
229037229037

229037229037

229037

1" 4ohm Horn Tweeter1" 4ohm Horn Tweeter

1" 4ohm Horn Tweeter1" 4ohm Horn Tweeter

1" 4ohm Horn Tweeter

227056227056

227056227056

227056

12" 4ohm Woofer Speaker12" 4ohm Woofer Speaker

12" 4ohm Woofer Speaker12" 4ohm Woofer Speaker

12" 4ohm Woofer Speaker
210242 Filler for Speaker Box (Specify m²)
210217 Black Sealer (specify mt)
210215 Adhesive Rubber Foam 10x1.9mm (Specify mt)
210211 Gasket between Tweeter and Horn
120964 M4i M5e x17.5mm Threaded Pin for Woofer
120148 Screw M5x65mm for Handle
120147 Screw M4x8mm for Speakers

AV-12 8 OhmAV-12 8 Ohm

AV-12 8 OhmAV-12 8 Ohm

AV-12 8 Ohm

778112 Cables Assembly
727602 Inputs Panel Assembly AV-12/8 OHM
778144 * Jack-Speakon Cables Assembly
141200 ** Speakon Socket (NL4MP Neutrik)
140193 ** Jack Mono Socket
768203768203

768203768203

768203

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Crossover Filter Board (Pcb#313063) AV-12/8 OhmCrossover Filter Board (Pcb#313063) AV-12/8 Ohm

Crossover Filter Board (Pcb#313063) AV-12/8 OhmCrossover Filter Board (Pcb#313063) AV-12/8 Ohm

Crossover Filter Board (Pcb#313063) AV-12/8 Ohm
667693 * Rear Panel AV-12/8 Ohm
667702 Handle
667700 Grid
657270 EWT(TM) Elliptical Horn
657267 Box
229038229038

229038229038

229038

1" 8ohm Horn Tweeter1" 8ohm Horn Tweeter

1" 8ohm Horn Tweeter1" 8ohm Horn Tweeter

1" 8ohm Horn Tweeter

227057227057

227057227057

227057

12" 8ohm Woofer Speaker12" 8ohm Woofer Speaker

12" 8ohm Woofer Speaker12" 8ohm Woofer Speaker

12" 8ohm Woofer Speaker
210242 Filler for Speaker Box (Specify m²)
210217 Black Sealer (specify mt)
210215 Adhesive Rubber Foam 10x1.9mm (Specify mt)
210211 Gasket between Tweeter and Horn
120964 M4i M5e x17.5mm Threaded Pin
120148 Screw M5x65mm for Handle
120147 Screw M4x8mm for Speakers

AV-15 4 OhmAV-15 4 Ohm

AV-15 4 OhmAV-15 4 Ohm

AV-15 4 Ohm

778112 Cables Assembly
727603 Inputs Panel Assembly AV-15/4 Ohm
778144 * Jack-Speakon Cables Assembly
141200 ** Speakon Socket (NL4MP Neutrik)
140193 ** Jack Mono Socket
768204768204

768204768204

768204

**

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Crossover Filter Board (Pcb#313062) AV-15/4 OhmCrossover Filter Board (Pcb#313062) AV-15/4 Ohm

Crossover Filter Board (Pcb#313062) AV-15/4 OhmCrossover Filter Board (Pcb#313062) AV-15/4 Ohm

Crossover Filter Board (Pcb#313062) AV-15/4 Ohm
667694 * Rear Panel AV-15/4 Ohm
667703 Handle
667701 Grid
657270 EWT(TM) Elliptical Horn
657268 Box
229036229036

229036229036

229036

1" 8ohm Horn Compression Driver1" 8ohm Horn Compression Driver

1" 8ohm Horn Compression Driver1" 8ohm Horn Compression Driver

1" 8ohm Horn Compression Driver

227058227058

227058227058

227058

15" 4ohm Woofer Speaker15" 4ohm Woofer Speaker

15" 4ohm Woofer Speaker15" 4ohm Woofer Speaker

15" 4ohm Woofer Speaker
210242 Filler for Speaker Box (Specify m²)
210217 Black Sealer (specify mt)
210215 Adhesive Rubber Foam 10x1.9mm (Specify mt)
210211 Gasket between Tweeter and Horn
120965 M4i M5e x24mm Threaded Pin
120148 Screw M5x65mm for Handle
120147 Screw M4x8mm for Speakers

AV-15 8 OhmAV-15 8 Ohm

AV-15 8 OhmAV-15 8 Ohm

AV-15 8 Ohm

727604 Inputs Panel Assembly AV-15/4 Ohm
778144 * Jack-Speakon Cables Assembly
141200 ** Speakon Socket (NL4MP Neutrik)
140193 ** Jack Mono Socket
768205768205

768205768205

768205

**

**

*

Crossover Filter Board (Pcb#313065) AV-15/8 OhmCrossover Filter Board (Pcb#313065) AV-15/8 Ohm

Crossover Filter Board (Pcb#313065) AV-15/8 OhmCrossover Filter Board (Pcb#313065) AV-15/8 Ohm

Crossover Filter Board (Pcb#313065) AV-15/8 Ohm
667695 * Rear Panel AV-15/8 Ohm
667703 Handle
667701 Grid
657270 EWT(TM) Elliptical Horn
657268 Box
229036229036

229036229036

229036

1" 8ohm Horn Compression Driver1" 8ohm Horn Compression Driver

1" 8ohm Horn Compression Driver1" 8ohm Horn Compression Driver

1" 8ohm Horn Compression Driver

227059227059

227059227059

227059

15" 8ohm Woofer Speaker15" 8ohm Woofer Speaker

15" 8ohm Woofer Speaker15" 8ohm Woofer Speaker

15" 8ohm Woofer Speaker
210242 Filler for Speaker Box (Specify m²)
210217 Black Sealer (specify mt)
210215 Adhesive Rubber Foam 10x1.9mm (Specify mt)
210211 Gasket between Tweeter and Horn
120965 M4i M5e x24mm Threaded Pin
120148 Screw M5x65mm for Handle
120147 Screw M4x8mm for Speakers

AV-15S 4 OhmAV-15S 4 Ohm

AV-15S 4 OhmAV-15S 4 Ohm

AV-15S 4 Ohm

841208 Cables Assembly
727605 Inputs Panel Assembly AV-15S/4 Ohm
778144 * Jack-Speakon Cables Assembly
141200 ** Speakon Socket (NL4MP Neutrik)
140193 ** Jack Mono Socket
768206768206

768206768206

768206

**

**

*

Crossover Filter Board (Pcb#313064) AV-15S/4 OhmCrossover Filter Board (Pcb#313064) AV-15S/4 Ohm

Crossover Filter Board (Pcb#313064) AV-15S/4 OhmCrossover Filter Board (Pcb#313064) AV-15S/4 Ohm

Crossover Filter Board (Pcb#313064) AV-15S/4 Ohm
667696 * Rear Panel AV-15S/4 Ohm
667703 Handle
667701 Grid
657269 Box
347393 Threaded Clog (to steady on the floor)
227060227060

227060227060

227060

15" 4ohm Woofer Speaker15" 4ohm Woofer Speaker

15" 4ohm Woofer Speaker15" 4ohm Woofer Speaker

15" 4ohm Woofer Speaker
210242 Filler for Speaker Box (Specify m²)
210217 Black Sealer (specify mt)
210215 Adhesive Rubber Foam 10x1.9mm (Specify mt)
177721 Fixing Plate (to fix the Floor Bracket)
120965 M4i M5e x24mm Threaded Pin
120148 Screw M5x65mm for Handle
120147 Screw M4x8mm for Speakers
667704 Floor Bracket with Threaded Knobs

Note:Note:

Note:Note:

Note:

Each spare part is single quantity unless otherwise specified.
Asterisk prefix explanation:
Omitted = First level spare part.
One asterisk = Second level, part of previous listed first level part.
Two asterisk = Third level, part of previous listed second level part.

Three asterisk = ............

Any request for not above mentioned part must encompass specific description including:

1) Model name,

2) Section name,

3) Module code,

4) Reference name,

5) Quantity number.